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Rosser et al. (2007) found that surgeons who had played video games during college made fewer errors on a test of laparoscopic skills than those who hadn't played video games. Imagine that for a random sample of 25 surgeons, researchers assessed the number of hours per week (HPW) each surgeon reported playing video games in college and the number of errors (Errs) each one made on the test of laparoscopic skills. Let's say that the results showed that the mean number of errors was 7.5 with a standard deviation of 2.5, and the mean number of hours spent playing video games was 12 with a standard deviation of 4.5. The correlation between Errs and HPW was r= -.25. Compute the estimated standard error of the regression slope for the regression equation that predicts Errs from HPW.

Rosser et al. (2007) found that surgeons who had played video games during college made fewer errors on a test of laparoscopic skills than those who hadn't played video games. Imagine that for a random sample of 25 surgeons, researchers assessed the number of hours per week (HPW) each surgeon reported playing video games in college and the number of errors (Errs) each one made on the test of laparoscopic skills. Let's say that the results showed that the mean number of errors was 7.5 with a standard deviation of 2.5, and the mean number of hours spent playing video games was 12 with a standard deviation of 4.5. The correlation between Errs and HPW was r= -.25. Compute the estimated standard error of the regression slope for the regression equation that predicts Errs from HPW.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Rosser et al. (2007) found that surgeons who had played video games during college made fewer errors on a test of laparoscopic skills than those who hadn't played video games. Imagine that for a random sample of 25 surgeons, researchers assessed the number of hours per week (HPW) each surgeon reported playing video games in college and the number of errors (Errs) each one made on the test of laparoscopic skills. Let's say that the results showed that the mean number of errors was 7.5 with a standard deviation of 2.5, and the mean number of hours spent playing video games was 12 with a standard deviation of 4.5. The correlation between Errs and HPW was r =-.25. Compute the estimated standard error of the regression slope for the regression equation that predicts Errs from HPW.
Transcribed Image Text:Rosser et al. (2007) found that surgeons who had played video games during college made fewer errors on a test of laparoscopic skills than those who hadn't played video games. Imagine that for a random sample of 25 surgeons, researchers assessed the number of hours per week (HPW) each surgeon reported playing video games in college and the number of errors (Errs) each one made on the test of laparoscopic skills. Let's say that the results showed that the mean number of errors was 7.5 with a standard deviation of 2.5, and the mean number of hours spent playing video games was 12 with a standard deviation of 4.5. The correlation between Errs and HPW was r =-.25. Compute the estimated standard error of the regression slope for the regression equation that predicts Errs from HPW.
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